Condenser for refrigerating apparatus



Nov. 13, 1928. 1,691,180

J. o. CABREY CONDENSER FDR REFRIGERATING APPARATUS Fiied June 2a, 1926da/m/ 0. 6a z'a 27 6 M 7 v 7 Patented Nov. 13, 1928.

' UNITED STATES PATENT JOHN 0. cARRnY, on ST. LOUIS, Mrssounr, assrenonTO 1&1 Ci ENG irTEERING co.,'I1vo., OF ST. LOUIS, MISSOURI, ACORPORATION OF MISSOURI.

CONDENSER 'ron REFRIGERATING APPARATUS.

Application filed June 28, 1926. Serial No 119,106. 1 i

This invention relates to new and useful improvements in refrigeratingapparatus and to a novel method of condensing therefrigerant.

1 T he objects of the invention are to provide 1 an improved condenserarranged so as to effect the cooling and condensation of the compressedrefrigerant in a simple and ed1- cient manner thereby enabling me to usea more compact condenser unit which is adapted to be placed between thecompressor unit and the motor used to operate said compressor. a r fOther objects of the inventionare to provide a condenser comprisingtwocoiledsec tions, one ofwhich is of smaller diameter and arrangedwithin the other section, said sections-having their inlet and outletconnections so disposed that the path of travel of the refrigerantthroughsaid sections is simultaneous and in opposite directions to eachother in order to insure rapid dissipation of heat from said sections. 1

Further objects of the invention are to arrange such sections in nestedrelation'with each other with the axes of said sectionsdisposedcoaxially with the axis of the operating shaft of saidcompressor and motor andto provide a suitable fan on said shaftanddisposed within said coils for forcingthe air radially through saidsections thereby insuring efficient circulation of air through all ofthe coils of said sections.

With these and other objects in view, my invention consists in certainnovel features of construction and arrangement of parts. here inaftermore fully described and claimed, and illustrated in the accompanyingdrawings, in which- Figure 1 isa side elevational View, partly insection, of my improved refrigerating'ap paratus'.

Figure 2 is a top plan view of the same.

Figure 3 is a vertical cross section taken transversely on line 3-3 ofFigure 1.

Referring by numerals to the accompanying drawings, indicates acompressor unit used for compressing the refrigerant. A shaft 11 extendsfrom said compressor and is connected by a coupling 12 to a shaft 14 ofa motor or other prime mover 15. Leading from the high pressure side ofthe compressor is a pipe connection 16 which communicates with thehorizontally disposed tubular memlarge diameter and her or header17which is'of comparatively serves as anintake manifold for a pair ofcondenser sections 18 and 19. The inlet ends QO'and 21 thereof are connected tosaid header as indicated at22 and 23 respectively. Eachcondenser section is formed by coiling the pipe and the diameter of thecoils of section 18 is larger than the diameter of the coils of section19 so that the latter can be arranged within the first section 18 andspaced a suitable distance.therefrom.

Vhen. so arranged; the coils of section 19 run in opposite direct-ion tothecoils of sect-ion 18 and the inlet terminals and 21 are connected tothe opposite ends of intake manifold 1'? so that the refrigerant intraversing the respective sections runs in opposite directions asindicated by arrows in Figure 2. The outlet terminals or connections 24and25 of section 19 and 18are connected at spaced points to ahorizontally disposed tubular member or header 26 from which leads apipe 27 which conveys the condensedrefrigerant to an expansion orcooling unit 28. A pipe 29 connects'the cooling unit 28 with the lowpressure side ofthe compressor and serves to return the refrigerant backto the compressor, whereupon the cycle of operation is repeated.

The'sections 18 and 19 are disposed with their axesin a'horizontal planeand preferably coaxial with shaft 14. A fan 30, provided withhorizontally disposed bladesill concentrically arranged around shaft 14.is fixed to said shaft Within the inner section 19and preferablylongitudinally coextensive with said sections 18 and 19. The rotation ofshaft 14 actuates fan and causes air to be forced radially. through thecoils of said sections. thereby assisting in dissipating heat radiatedby said sections, and accelerating the condensation of the refrigerant.Fresh air is drawn in through the ends of the sections 18 and 19 andreplaces the air driven radially through the coils of the sections andin this I manner a constant circulation of air through all of the coilsis provided in an eflicient and simple manner.

The provision of two coiled sections ar ranged in nested spaced relationwith each other and having their respective inlet and outlet connectionsarranged so that the refrigerant is caused to traverseSlll'lllltflIlQOUSlY both of said sections in opposite directionsassures uniform distribution of heat throughmy invention it is obviousthat changes in the arrangements of parts of my devicecould be madewithout departing from the spirit of my invention.

I claim:

1. In a refrigerating apparatus, a. cone' denser unit comprising twodlflerentsized sections of coiled pipe, the smaller section beingarranged wlth n the larger and in spacedrelation therewith, the inletconnections of both of said sections being disposed in the samehorizontal plane the opposite ends of the respective sections, and theoutlet connections of both of said sections being disposed in the samehorizontal. plane oppositely to said inlet connections and below thelongitudinal plane thereof so as to cause the refrigerant to travelthrough said sections in opposite directions.

2. In a refrigerating apparatus, a con.- dens-er unit comprising twohorizontally .disposeddifferent sized sections of coiledpipe, thesmallersection being arranged within the larger and in spaced relationtherewitlnthe inletconnections of both of said sect-ions being disposedin the same horizontal plane at the oppositeends of the respectivesections, and the outlet connections being disposed below the horizontalplane of said inlet connections so as to cause the refrigerant The fanblades 7 to travel through said sections in opposite directions, and afan revolubly mounted within the inner section coaxially therewith forforcing the air radially through the coils of said sections. a l

c 3. In a refrigerating apparatus, a 'condenser unitcomprising twohorizontally arranged-coaxial sections of coiledpipe, one of saidsections being of smaller diameter than the other and arranged withinthe latter in spaced relation therewith, an intake header common to bothof said sections, and a discharge header common. to vlooth of saidsections. 7 4. In a refrigerating apparatus, a condenser unit comprisingtwo horizontally arranged-coaxial sections of coiled pipe, one of saidsections being of smaller diameter than the other and arranged Withinthe latter in spaced relation therewith,.an intake header common tobot-hof said sections, a discharge,

header common to bothof said sections, and means revolubly disposedwithin the, inner section and spaced therefrom for forcing theairradially through thecoils of said sections.

5. In a refrigerating apparatus, a condenser unit comprising twohorizontally disposed coaxial sections of coiled pipe, one of saidsections being of smaller diameter than the other and arranged withinthe latter in spaced relation therewith, an intake header common to,both of said sections, a discharge header common to both of saidsections, and a series of horizontally disposed fan blades secured tosaid shaft and arranged inconcentric spaced relation with the coils ofthe I inner sectionfor drawing the airint-o said sections-through theends thereofand forcing the air radially through the coils of saidsections In'testimony whereof I hereunto afiix my signature this 4th dayof June, 1926.

JOHN QCARR'EY.

